Cycloconverter Based Three Phase Induction Motor to Replace Flywheel of the Process Machine

Abstract

This paper details with the logic of developing an appropriate drive to eliminate flywheel of the process machine including provision for variation in load. This is achieved by using three phase cycloconverter based variable voltage variable frequency (VWF) drive. To realize this, a demand torque characteristic of a specific process machine is studied. The cycle duration of demand torque characteristics is divided into suitable number of time intervals. The subdivisions of time intervals in form of frequencies are tabulated to simplify design procedure. Change in frequency on particular subdivision results in demand torque of the induction motor. To meet this new frequency and voltage, three phase cycloconverter is designed with required frequency output. Finally to support theoretical analysis, simulation results are presented.